Openfiler as NAS for ESXi shows the performance difference between software RAID6 and RAID10.

I had some performance issues with a new ESXi server with virtual machines hosted on a table of 6 software RAID (12 units of optical fiber). Here's what it looked like:

12 multi-plate (RAID 6) -fiber channel- Openfiler.


NFS - VMWare ESXi

Since I had a spare CF array I decided to fix to the Openfiler box and try to RAID 10 in software. Different performances has been staggering. I did a lot of steps, but I test the startup time of a computer virtual stored on each table of FreeBSD.

RAID 6 59 seconds

RAID 10 45 seconds

Now waiting for MBR of FreeBSD for 5 seconds and the boot loader expects 10, so there were at least 15 seconds of downtime in each case. The strange thing is that accessing directly the matrix RAID 6 via FTP provided good performance. I was able to saturate a 100Mbit link and the Openfiler Server showed almost no load. But with the VM on the RAID 6 array, the load on the Openfiler area would jump to 4 +. I hope it helps someone.

Jason M.

It's better.  What system and mount underlying file options are used?

http://blog.peacon.co.UK

Please give points for any helpful answer.

Unofficial list of transfer USB devices work

Tags: VMware

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